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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A193621 G.f. satisfies: A(x) = 1 + Sum_{n>=1} x^n * A(x)^A026255(n).

Table of values

n a(n)
0 1
1 1
2 3
3 9
4 32
5 122
6 490
7 2044
8 8769
9 38455
10 171606
11 776763
12 3557681
13 16457402
14 76778667
15 360830164
16 1706641162
17 8117569255
18 38804142203
19 186323145806
20 898247214881
21 4346078073871
22 21097315227638
23 102721050351404
24 501515949459113
25 2454747530072567
26 12043165949629976

List of values

[1, 1, 3, 9, 32, 122, 490, 2044, 8769, 38455, 171606, 776763, 3557681, 16457402, 76778667, 360830164, 1706641162, 8117569255, 38804142203, 186323145806, 898247214881, 4346078073871, 21097315227638, 102721050351404, 501515949459113, 2454747530072567, 12043165949629976]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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